超低电阻表面贴装电流分流器

摘要：超低电阻表面贴装电流感应电阻看起来就像理想的包。物理设计，金属表带，似乎很理想，提供尽可能最低的电感。往往这些电阻需要一些电阻电容滤波器来限制开关噪声尖峰。问题是，分流器的时间常数除以电路的电阻，封装电感。因此，分流电阻低，时间越长，衰减时间。

Maxim>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:currentsense,resistor,surfacemount,currentshunt,current-senseresistors,shuntresistanceDec27,2001APPLICATIONNOTE908Ultra-LowResistanceSurfaceMountCurrentShuntsAbstract:Ultra-lowresistancesurfacemountcurrent-senseresistorsseemliketheidealpackage.Thephysicaldesign,astrapofmetal,seemsideal,offeringthelowestinductancepossible.Toooftentheseresistorsneedsomekindofresistorcapacitorfiltertolimittheswitchingnoisespikes.Theproblemisthatthetimeconstantfortheshuntisthepackageinductancedividedbythecircuitresistance.Consequently,thelowertheshuntresistance,thelongerthedecaytimes.Ultra-lowresistancesurfacemountcurrent-sens